Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "user.ini" file in the "deusex/system" directory. Locate a key that is not already bound to a game function, such as "t". Add the "talk" command to that key, both uppercase and lowercase. For example, "t=talk" and "T=talk". Repeat this for all entries for that key in the file. Press T during game play, press [Backspace] to remove the word "Say" from the talk window, then type set DeusEx.JCDentonMale bCheatsEnabled True to enable cheat mode. Then, press T and enter one of the following codes to activate the corresponding cheat function. Note: It is helpful to set talk to a key that is bound to the "set DeusEx.JCDentonMale bCheatsEnabled true" text so it does not have to be typed manually in every level. To do this, make an entry such as "H=set DeusEx.JCDentonMale bCheatsEnabled True" in the "user.ini" file. Then, pressing H during game play and activate the cheat codes.
| Effect | Code |
|---|---|
| 10,000 credits | allcredits |
| Add indicated augmentation | augadd <augmentation name> |
| All basic augmentations | allaugs |
| All images | allimages |
| All skill points | allskillpoints |
| Master in all skills | allskills |
| All weapons | allweapons |
| Freeze shots, enemies, doors1 | playersonly |
| Disable flight and no clipping modes | walk |
| Display ending quotes | quotes |
| Enable EMP field | iamwarren |
| Flight mode enabled | fly |
| Full ammunition | allammo |
| Full energy | allenergy |
| Full health | allhealth |
| God mode | god |
| Hidden fourth ending | danceparty |
| Hidden menu | legend |
| Kill current target | tantalus |
| Level and FMV sequence select | open <level name> |
| Matrix mode | thereisnospoon |
| More energy | set deusex.jcdentonmale energy 10000 |
| Unlimited energy | set deusex.jcdentonmale energy 99999999 |
| Unlimited health | set deusex.jcdentonmale health 999999999 |
| End poison status | set deusex.jcdentonmale poisoncounter 0 |
| End drug status | set deusex.jcdentonmale drugeffecttimer 0.0 |
| Set indicated BE level | set deusex.jcdentonmale energy <number> |
| Set indicated credits level | set deusex.jcdentonmale credits <number> |
| Set indicated oxygen level when underwater | set deusex.jcdentonmale swimtimer <number> |
| Set indicated skill points | set deusex.jcdentonmale skillpointsavail <number> |
| Immune to all bad statuses | set deusex.jcdentonmale bnintendoimmunity true |
| Set immune to all bad statuses time | set deusex.jcdentonmale nintendoimmunitytimeleft <number> |
| No clipping mode | ghost |
| Programmer message | huthut |
| Programmer message | bighead |
| Set game speed | slomo <number> |
| Set view angle (default 90) | fov <1-360> |
| Spawn indicated item | summon <item name> |
| Spawn number of items | spawnmass <item name> <number> |
| Third party view disabled | behindview 0 |
| Third party view enabled | behindview 1 |
| Toggle invisibility | invisible <0 or 1> |
| View character | cheatview <character name> |
| Breathe underwater | amphibious |
| Set jumping ability | setjumpz <height> |
| Kill indicated character types | killall <character type> |
| Kill all pawns | killpawns |
| Remove indicated nanokey | removenanokey <nanokey number> |
| Get description of nanokey | givenanokey <nanokey number> |
| Display refresh reates | togglewinstats |
| Display HUD window frames | togglewinframs; winframes (bool) |
| Display window color dialog | showrgbdialog |
| Damage indicated part | damagepart <part number>, <amount> |
| Damage all body parts | damageall <number> |
| Set friction; 10 is default | setfriction <number> |
| Left-handed character | sethand left |
| Right-handed character; default | sethand right |
| Display frame rate information | timedemo true |
| Remove frame rate information | timedemo false |
| Screenshot, with flash | sshot |
| Opens/hacks target | opensesame |
(1. You can only fire a weapon once while this cheat is active.)
You can also enable cheat mode by starting the game with the -hax0r command line parameter.
Use one of the following item names with the summon or spawnmass codes. Note: You can also use the target augmentation to find out file names of other objects that can be summoned by turning it on and moving the crosshairs onto an object. Note: You will not be able to spawn attack helicopters or black helicopters by using the spawnmass code in confined spaces (inside).
Use one of the following augmentation names with the augadd code. Note: Some augmentations will overwrite the position of existing augmentations.
| Effect | Augmentation name |
| Combat Strength (More melee strength and damage) | AugCombat |
| Microfibral Muscle (More lifting strength) | AugMuscle |
| Ballistic Shield (Protected from physical projectiles/weapons) | AugBallistic |
| Energy Shield (Protected from energy projectiles/weapons) | AugShield |
| Cloak (Concealment from organic entities) | AugCloak |
| Radar Transparency (Concealment from mechanical entities) | AugRadarTrans |
| Synthetic Heart (Upgrade performance of all augmentations) | AugHeartlung |
| Power Recirculator (Reduce power cost of all augmentations) | AugPower |
| Swim better | AugAqualung |
| Increased healing rate | AugHealing |
| Environmental resistance | AugEnviro |
| EMP Shield (Protects from EMP damage) | AugEMP |
| Targeting (Provide info on target and increases accuracy) | AugTarget |
| Vision Enhancement (see through walls, night vision, etc.) | AugVision |
| Aggressive Defense System (Protect against missiles and grenades) | AugDefense |
| Spy Drone (Launch a drone for reconnaissance, disabling cameras and turrets, etc.) | AugDrone |
| Run silently | AugStealth |
| Run faster | AugSpeed |
Use one of the following level names with the open code.
Use one of the following level names with the open code to view the corresponding FMV sequence.
Use one of the following numbers with the damagepart code to damage the corresponding body part.
Get to the submarine base. Once Gary Savage tells you to meet him at the roof of the base, go there but make sure your inventory is full. He will try to give you an augmentation canister. Keep clicking on him and you will receive 500 skill points each time.
When you flip the switches on the two generators to give power back to the scientists at the Vandenberg Base, continually flip the power switch to get 100 skill points every time.
Immediately before leaving Hong Kong, Jaime (the doctor) will give you an aug canister. If your inventory is full, and you have to drop something, you will also drop an aug canister. Repeat the process to completely fill your inventory with augs.
If you are playing the Command Center level and playing in team mode, go to the rooftop. Once there, use the Speed aug and the Ballistic Defense aug (so you will not get shot with a Gep Gun). Go on top of the elevator. Go on that corner in the far right side. Once there, set one gas grenade in front of you on the wall. After that, use the Speed aug to jump on the gas grenade. Then, lay another and jump on that one. Once on the second gas grenade, jump on the very top of the roof. You can snipe anyone desired. This requires a lot of practice. Note: This trick works on any wall to get on a roof.
When you first enter Hells Kitchen early in the game, exit the subway station and go to your right, towards a back alley. You will find a basketball hoop and a ball. It is very difficult to shoot the ball into the hoop -- enable the fly code to make the shot. A "Sign him up for the Nicks!" message will appear.
Enable cheat mode, then use the open 99_endgame4 code. Once the level is finished loading, enable cheat mode, and use one of the following codes for hilarious blowouts:
To make it even more funny, enter summon militarybot. While they are dancing, a military security bot will be walking around.
Enable the spawnmass lam code in flight mode to get a cluster bomber aircraft assault.
Enable the spawnmass lam, spawnmass rocketlaw, spawnmass rocketwp, and spawnmass rocket codes. Enable God mode and do this while standing in view of a mirror for a real laugh. Do not stand too close. Get off center so you can see a sort of sideways (from the hip) view of the action. Do this, go into the entrance to Unatco level 4 and look directly at the glass from across the room, then turn slightly sideways and watch your reflection.
Enable the spawnmass weaponshuriken 20 code. 20 knives will fly out of nowhere and strike down anything they hit.
Enable cheat modem then look at the item or person that you want to destroy. Type set deusex.<person/object name> health 0. They will have no weapons, and even UNATCO troops at the start of the game can be killed with any weapon. Note: If any of the main characters are killed, then sequences will not occur. To change this, use the summon or spawnmass code to get them back.
Start by picking the lock, then after a couple of percent points start to go down, go to the inventory screen. Wait for about two second per 10% left in the lock. After you count down, leave the inventory screen and the lock should be opened.
When you go to level 3, after you talk to the Boss, he will tell you to get a physical and go to the armory. When you get to the armory, if you have a full inventory and you ask for a multitool or a smart pick, JC will say "Hold on, can't hold anything else". The multitool or lock pick will fall to the ground. Repeat this to get an unlimited number of multitools or lock picks.
When you are at the Lucky Money in Hong Kong, get Inside the club and go where the door girl is located. Kill her, then right click on her to get some credits.
when starting a new game, at the "Select Skills" screen, downgrade your pistol skill so that you have 6575 skill points. Start the game, then go to your skills menu. You should have the pistol skill on trained and still have the 6575 skill points.
In every level are small items that you can pick up. Find such an item and look for a friendly person (green target cursor). Throw and hit the person with the item to get random reactions. Do not try this on an enemy unless you want to get shot.
Standard (non-Boss) enemies you encounter have a slow reaction time when spotting you. The farther away you are from the enemy, the longer it will take for him to spot you. All enemies except for Bosses will say something such as "What was that noise?" or "Who's there?". If this happens, it does not mean that they know you are there -- they only think that you are there. If you hear en enemy say something similar to that, look for cover, because they will investigate. This trick will not help you if you are out in the open.
There is trick to killing a Gray with a pistol or a low-tech weapon. Since the Grays are quick, you have to do this fast. Aim for the legs when using a pistol. Then, shoot them slightly above the torso, at about the neck area. They will die with one shot. Note: You need to do this with pistol advanced or trained. If you do this with it untrained, you will get killed easily.
With a combat knife or crowbar, find a medkit. Stand near the Gray and slice it only on the neck. When it needs just one more slice, slice it near the crotch. It will die very easily, and will be prevented from firing the Radiation Cannon. Use the medkit since you have been damaged by the radiation. It will heal about 25, depending on how long it took you to kill it, and how much damage you took. If it is over 45 or 50, find the nearest Medbot. Note: It is much easier to kill it with throwing knives by doing the same process. If you have lower than advanced, you will automatically die.
You can kill robots with just about any weapon, but it will take awhile when using a shotgun. With a normal unmodified clip, it will take over ten clips, and you will need God mode.
Shoot the fire extinguishers that you see occasionally throughout the game to blind your enemies.
When you are low on items, go up behind a security guard and make sure there are no robots, other guards, or cameras around. Hit him with the crowbar. He should die instantly and have bullets, knockout ammo, explosives, and a few other items that are very useful.
After being captured by Gunther, you will start in a jail cell in the next level. When the level starts you will still have your weapons for just a moment, then they are taken from you. When the level starts, open your inventory before your weapons are gone and drop them. Return to the game, then pick up your weapons and continue playing with them.
When bypassing something that requires more then one Multi-Tool, start bypassing then press [F1]. Wait for a minute (scroll through the tabs to pass the time) then exit the inventory screen. The object should be bypassed . Look down at your Multi-Tools. You will notice that you only used one Multi-Tool instead of the required amount. Note: This also works with Lock Picks.
Start a new game and spend all your skill points on heavy armor. Alternately, enable the allskills code. Go in an open area with one person in the middle (for example, UNATCO Island, Area 51 Entrance, etc.) Equip a Gep Gun (use the summon weapongepgun if needed) Aim at the person the quickly tap [Fire] and look into the corner. Then, look down. You will see the rocket surrounding the person, doing circles. Nothing can stop it, unless it hits you or the corner. If this does not work, try it in the first level. Note: You can also do this in multi-player mode, without the codes.
In Vandenberg - Command you can use multitools on the pad that read "Override" above it to bypass it. You will get 100 skill points each time you use it, as many times as desired.